IPv6: only update the lifetime of the relevant temporary address

When receiving a prefix information from a routeur, only update the
lifetimes of the temporary address associated with that prefix.

Otherwise if one deprecated prefix is advertized, all your temporary
addresses will become deprecated.

Signed-off-by: Benoit Boissinot <benoit.boissinot@ens-lyon.org>
Acked-by: YOSHIFUJI Hideaki <yoshfuji@linux-ipv6.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 3 insertions, 0 deletions

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 101e0e70ba27..e11f10eceffc 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -1831,6 +1831,9 @@ ok:
                                  * lifetimes of an existing temporary address
                                  * when processing a Prefix Information Option.
                                  */
+                                if (ifp != ift->ifpub)
+                                        continue;
+
                                 spin_lock(&ift->lock);
                                 flags = ift->flags;
                                 if (ift->valid_lft > valid_lft &&